Identifying factors coalescing and disrupting the Silesian economy in the period 1918-1945 is not an easy task. After the region was partitioned into Czechoslovakian, German and Polish parts, such factors can be observed in each of the three areas. They lead to economic self-sufficiency in the different parts of Silesia, which in turn led to the dissolution of traditional economic relations within the region. Autarky proved impossible in only a few areas, such as energy distribution and transportation, yet even in these areas cooperation was minimal. Many integrative factors had limited territorial reach, such as delivery of water and gas in German Lower and Upper Silesia. The greatest number of contradictions can be discerned in German Silesia, where the key internal disruptive factor was the existence of two industrialised coal mining districts (the Upper Silesian and Wałbrzych-Nowa Ruda Industrial Districts). Coalescing and disruptive factors were no longer relevant during World War II, when all of Silesia was once again under the administration of one state, and its economy and industry was yoked to the military juggernaut of the Third Reich.